Global String A Musical Instrument for Hybrid Space Atau Tanaka, Bert Bongers [email protected], [email protected] Abstract Creative and technical considerations in building a musical instrument to traverse acoustical space and network space. Conceiving a musical instrument for heterogeneous space and democratic use requires implementation of diverse modes and techniques satisfying needs of tactile local presence, and tangible telepresence. The result is an artistic project destined for multi-site gallery installation and performance. It is a musical instrument that exists in the mixed realities of acoustical space and network space. Keywords: Network music, sensor instrument, gallery installation Project URL: http://www.sensorband.com/atau/globalstring/ Year the Work was created: 1998 -2000 Project Partners: GMD WDR The Daniel Langlois Foundation V2 Ars Electronica Center 1 Introduction 1.1 Overview Global String is a multi-site network music installation. The idea was to create a musical string (like the string of a violin or guitar) that spans a large geographical distance. The installation consists of a steel cable (12mm diameter, 15m length) connected to a virtual string on the network. The real part of the string stretches from the floor diagonally up to the ceiling of the space. Vibration sensors translate the physical vibrations to network data. These vibrations are transmitted to the other endpoint of the string, an identical steel cable. Striking the string on one side makes it vibrate on the other end. hlgure 1. (ilobal String at V2/AEC Sound is synthesized in real time by a software algorithm implementing a physical model of a string of unreal proportions. Audio, video, and sensor data is streamed between the sites, providing a live connection between the players. The system made up of these components conceptually comprises a single vibrating string. It is a musical instrument where the network is its resonating body. This paper discusses conceptual and technical issues confronted during development and realiza-tion of the project. 1.2 Hybrid space Global String exploits network infrastructure to connect two (or more) parallel physical acoustical spaces. As the vibrations of the string traverse network space, one can think of Global String as a stringed instrument that is made up of heterogeneous materials, or mediums. Change of medium for signals 299
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